Abstract: In a reference-voltage generation circuit using a diode, its temperature characteristics can be freely controlled. A regulating current supply section supplies a regulating current for regulating a diode current to an anode of one of a first or second diode. The regulating current supply section can change a magnitude of the regulating current, and can generate a current proportionate to a diode current of the other diode as the regulating current.

Abstract: A semiconductor device includes: a first semiconductor chip having an upper face on which at least one first electrode pad is formed; a second semiconductor chip provided above the first semiconductor chip and having an upper face on which at least one second electrode pad is formed; a conductive film external to the first semiconductor chip and the second semiconductor chip; and a wire. The wire electrically connects the first electrode pad and the second electrode pad to each other via the conductive film.

Abstract: In a power supply disconnection cell, a power supply connection switch is added in parallel to a protection transistor having a fixed gate. The power supply connection switch electrically connects or disconnects a plurality of power supplies according to a control signal externally input through an external control terminal. In a WLBI process, a plurality of power supplies are connected by the power supply connection switch, and therefore, a voltage is applied to other power supply pads by voltage application to a specific input terminal. After the WLBI process, the power supplies are disconnected, and electric charges produced by an abnormal voltage, such as a surge, or the like, are released by the protection transistor provided between the power supplies, whereby breakdown of a semiconductor device is prevented.

Abstract: In a power supply disconnection cell, a power supply connection switch is added in parallel to a protection transistor having a fixed gate. The power supply connection switch electrically connects or disconnects a plurality of power supplies according to a control signal externally input through an external control terminal. In a WLBI process, a plurality of power supplies are connected by the power supply connection switch, and therefore, a voltage is applied to other power supply pads by voltage application to a specific input terminal. After the WLBI process, the power supplies are disconnected, and electric charges produced by an abnormal voltage, such as a surge, or the like, are released by the protection transistor provided between the power supplies, whereby breakdown of a semiconductor device is prevented.